Valveless pump



W. G. BOONZAIER.

VALVELESS PUMP.

APPLICATION mso Nov.22. |920.

1,438,691. Patented B86111922.

4 sains-sum 2. 27

w. G. BooNzAsER. vALvELEss PUMP.` APPLICATION FILED NOV. 22. 1920.

Patented Dec. 12, 1922.

W. G. BOONZAIER.

VALVELESS PUMP. APrLfcAloN msn Nov.22. 1920.

4 SHEETS-SHEET 4.

L" f/ f 'W l l ,L7/vengar: Wwf/7W Q ,6W wml Patented Dec. 12, 1922.

To uit fri/1.0m 'it moy concern.'

llico. "l2,

VAL'VELESS PUMIP.

.Application led November 22, 1920. fSeral No. 425,689.

.Be it lnoivn that l, lllrririnmt Gener Boo'NaMnn, a subject o'l Vthe King' of `Gfreat Britain, residing at ll Bramiield Road, New Wandsworth, London, S. lV. ll, England, have invented certain new and useful lmprovemen'ts in Valveless Pumps, oli' which the following is a specification.

This invent-ion relates to improvements in pumps more particularlysurface, llore hole, or deep nell pumps for itluid, air, 'or other requirements, and has ifor its object, by eilfecting Jthe Aoijleration of opening and closing the inlet :and outlet ports hy'ineans of' Aalternate axially reciprocating` and rotary oscillating movements of the piston or cylinder itself, to dispense with independently operated valves as `hitherto used.

This attained oy movahly arranging `a cylinder in a cylindrical casing. provided preferably diametrically opposite eachother with inlet and outlet ports in such a Way that it performs on the `onehand the tunetions of a pist-.on Vand on [the other hand controls the said ports. This cylinder, which is closed yat one end 'thus 'forming one chamber tor single stroke pumps, or ,is divided loy a partition in two sides or chambers for vtivo stroke pumps, is provided in the chamber Walls With two ports arranged at anfangle lpreferably ol 90 and is adapted to receive alternate axially reciprocating androtary oscillating,'movements in such a Way that, in the caseot a `single stroke pump, in -its axial travel in one direction'the chamber .ot the cylinder is in communication with the inlet portB et the casing and hy yan oscillatory movement oli the cylinder at the end ot the said stroke the said inlet port is closed and the outlet port opened so that on the reverso stroke the -luid is .delivered through the outlet port. ln the case ot a two stroke pump the ports ot the tivo sides oit the cylinder are arranged diametrically opposite each other so that While'the one or lforward side regards direction oli tavel acts as delivery side, the other or rear side acts `as the suction side. i

The Werking' chamber is limited by means of a stationary head or heeds `inserted :from and secured ythe end or lends ol' the :cy`linydrieal casing in suelta Wayv lthat its length approximately corresponds 'to the length ot the stroke whereby the eficacy-ol' theworlring of the Cylinder which alternately functions as suction anddelivery cham-herds `increased. The head or heads are arranged in such a manner that an `annular space is formed between the piston and `the surrounding casing, which space serves as a Iguidefor the cylinder in its reciprocations.

Axially reciprocating as Well as rotem1 oscillating movements are imparted hy means `olz a cranked driving shaft operating' the pump rod, which is rigidly7 secured .to the cylinder in such a Way that at the end oi? .eachwstroke the rod receives arotary oscillatory movement through 90o. This vmay he effected for example hy means oi' a cam mounted on `the crank shaft imparting directly or through levers alternately reciprocating motionto a rack which is in mesh with a pinion mounted on the pump rod,\or it may be effected hyuarms attached to `the crank lWebs alternately engaging a collar on the pump rod, or by any other suitable means.

For borehole or ydeep Well pumps vthe `pump casing `is surrounded `by a jacket `which is indirect lcommunication.with the outlet port `oit the casing, While `a channel `through the jacketl connects `the inlet port to the supply. To this acket is .connected the pump piping through which the fluid is delivered, and'which may 'he extended inthe usual manner as `the looring `proceeds.`

dn order t-.o enable lthe operator When the delivery piping is lengthened to join up the `driving gear in `correct position in relation to lthe cylinder, an indicator mounted oir-the `top of the pump casing may he provided` This indicator' consists in an arm or pin strolre ,surface pump.

Fig'.` A2 is a horizontal section on the illll Fig. 3 isa similar sectionon the Line B B Fig. eis a similar section on the line Cf-C and Fig. 5 is a similar section along line D-D oflllig. l, i f

Figs. 6 and 7 are vertical sections on the line E-ll ot Fig. 1 showing some operative parts in their two extreme positions,

Fig. 8 shows in part sectional elevation, a construction of pump adapted for use in deep well or bore holes. and comprisesa zdriving gear shown in Figs. 1, 2, 6 and 7.

Figs. 1/1, 15,116 and 17 illustrate. diagramniatically the various relativepositions oi the ports in the course of a complete cycle of operation. l i

A. cylindrical casing 1 has rigidly mounted in its ends what- 1 term stationary heads 2 and 3,in` such a way that they project into the interior `of the said casingrto an extent leaving between their heads a clear space constituting the working chamber of the `pump and correspondingapproximately to the length of the stroke of the pump, when between their outer surface andthe casing annular spaces-1 (slightly longer than the stroke) are formed, such annular spaces being adapted to receive and guide the skirt or cylinder 5. The upper head 3 is centrally provided withV a sleeve 3a through which the piston rod 7 passes when secured v to the piston 5a. `This piston 5a divides the Vcylinder into twoequal halves, hereinafter to be called the lower and upper cylinder respectively, which are adapted to alternately telescope over kthe corresponding `heads Q and 3 and are eachprovided with two notches or openings constituting part f vof inlet and outlet ports 6 andGa and 6b and 6, arranged at an angle of 9()O to each other, the parts 6 and 6a of the upper cylinder being diametrically opposite to the ports 6" and 6c of the lower cylinder. r The casing 1 is provided with an inlet port 1a and an outlet port 1* arranged di ametrically opposite each other and communicating with the working chamber between, the pistons 2 and 3.

A combinedl reciprocating and oscillating motion is given to the cylinder through t-be medium ol the pump rod 7 which is rigidly secured to the partition 5 of cylinder 5 by any suitable means which will ensure the cylinder partaking of, by the reciprocating aswell as rotary oscillating motions of the `rod 7;-1 The upper end of the pump rod 7 is rotatably connected to across head 8, see

.Figures 8 to 10, working in guides@v and provided with a slot 10 which engages the nately rollers 15a and 16a mounted on the upper arms of rocking levers 15 and 16 pivoted on the bracket 13, and causes thereby thev lower arms of the respective levers to operate alternately land in opposite 'directions a slidably arranged rack 19 by means oi" a pin 18 attached thereto (Figs. 6 and 7).

In mesh with the rack 19 is a pinion 2O rigidly connected to a collar 30 which collar, while being prevented from axial displacement in its bearing transmits theoscillatory motion [it receives from the rack and pinion, by means of a pin 21 and keyway 22 to the pump rod 7 which is,\however, free to move axially in' the collar.

The pump is operated as follows Rotation of the crank shalt `1&1 imparts to the cross-head and consequently to the connecting rod 7 and cylinder 5V attached thereto a reciprocating motion, while the cam 17 is so arranged that it operates the levers 15 and 16 when the crank is near its dead "centre positions and imparts thereyforeV the oscillating` motion of 907 to the cylinder when the latter hasipractically cornpleted its up and its down stroke.

The diagrams Figs. 14 and 17 show the relative positions of cylinder and casing in development and in progressive stages during the course of a complete cycle of'operation.

Starting from the up position (Fig. 14) the lower cylinder having its port 6h in communication with the delivery port 1b of the casing, operates on its do-wn stroke as delivery side, gradually closing the delivery port 1b (Fig. 15) while the upper cyl# inder, which by means of its port 6 gradually opens the inlet port 12L of Athe casing becomes the suctionside. Arriving near the e end of the stroke the cylinder is caused to rotate 90O to the left (Fig. 16) so that Athe delivery port 1b is uncovered by the port 6a of the upper` cylinder, whichl now becomes the delivery side. and graduallyl closes the delivery port 1" while port- 6c of the lower cylinder, which now is the suction side gradually opens the inlet port 1 of the casing (Fig. 17) untiLwhen nearing the end of the stroke. the cylinder is 'caused to rotate to the right-v, back into its starting or the like (Figs. 8 and 9) it is surrounded by a jacket 34 extending from below and in direct communication with the delivery port 1b, a channel 34: through the said `jacket providing communication to the inlet port l of the casing 1. To this jacket 34e is connected thepump piping 35 throughwhich the fluid is delivered tothe surface, `and which may in the usual manner be extended as required. v

A modified orm ot driving gear for use particularly in connection with `a bore hole pump is shown in Figs. 8 to 12. j

' The oscillating motion of the cylinder, in this case is edec'ted 'by levers 26, y27preferably formed `as integralparts of vand in alignment with vthe crank webs `12 and ,extend outwards in opposite directions.` On the collar 30, embracing the connecting rod I 7 in the manner described with lregard to the previously described construction, are mounted on two projections the rollers 428, 29 in such positions thatone or the other lies in the path of one oi the levers 26, 27 respectively so that when the latter swing' round with the crank sha ft 14 they alternately turn the `collar 30 and thereby the connecting rod in one direction or the other through an angle of 90.

In orderY to enable thegoperator, when the piping is lengthened to join up the driving gear into the correct position in relation to the cylinder an indicator is mounted on the top ot the pump casing. 'I`his indicator consists preferably of a cylindrical cap 31 (Figs. 8, 9 and 12) over the top of the pum having one or two longitudinal slots which extend in width approximately over an angle of 90o, and in length are somewhat in excess of the strokel of the pump. The vertical edges 32 of such slot or slots form limiting abutments for a pin or arm 33 fixed on the pump rod 7 to limit thereby the oscillatory motion of the said rod, and thus indicate to the operator the two extreme positions, both axially as well as rotary, of the cylinder.

Instead of a cylindrical cap 31 two vertical rods, connected at the top for stiffening purposes might be mounted on the top of the pump.

Figure 13 shows a slight modification of the driving gear shown particularly in Fig. 2. The rack and pinion are here replaced by a fork or slotted plate 35 and a pin 34a, which latter is mounted on the collar 30. The slot is sufiiciently deep to'allow of the rotary motion of the collar and pin. The longitudinal reciprocation of the slotted plate can be elfected in the same way as the rack bar or in other convenient manner.

In a single stroke pump only one head is required and the cylinder is one sided or in the form of a cylindrical cup, the ro- `ot the axial reciprocations.

2. A single stroke reciprocatory pump comprising an open ended cylinder closed at one end andprovided with two lateral ports anda cylindrical casing provided with cooperating' inlet and `outlet ports, the cylinder being adapted to operate as a piston within the outer casing and to receive Aalternate axially reciprocating and rotary oscillating movements in such a way that on completion of the stroke the inlet port and on completionof thereverse stroke the outlet port of the casing is opened, means being provided 'for automatically imparting said rotary movements to the cylinder in a quick manner atthe ends of the axial reciprocations.

3. A two stroke` pump comprising acylinder open at its ends and divided by `a transverseV piston-like partition into two open-endedA chambers, each chamber being provided with an inlet/and a delivery port in its wall arranged at a suitable angle to each other, the inlet port of one chamber being diametrically opposite the delivery port of the other chamber, and vice versa, and a cylindrical casing, having an inlet port and an outlet port arranged diametrically opposite each other, the cylinder being adapted to be operated by a rod as a piston within the casing and means being provided to impart to said rod alternate axially reciprocating and rotary oscillating movements, the rotary oscillating movements taking place at the ends of the axial reciprocating movements so that, in its axial traveland having regard to the direction of the stroke-the forward chamber of the cylinder, when one of its ports is in communication with the outlet port of the cas ing, operates as the delivery side of the pump, while the rear chamber of the cylinder, by gradually opening the` inlet port operates as the suction side, while at the end of each stroke the functions of the two sides of the cylinder are reversed, by the oscillatory movement of the cylinder, substantially as described.

4. In a pump as set forth in claiming clause 3 the arrangement in the pump casing of two stationary heads one at either end thereof to form a working chamber beitil) tween the said two heads, which` chamber alternately fullills the functions of a suction and a delivery chamber substantially as described. c

5. In a pump as set forth in `claim l, the means for producingthe alternate vaxially reciprocating androtary oscillatory movements of the cylinder comprisinga reciproeating pump rod attached to a piston-like partition in the cylinder and passing through a collar -securedagainst axial displacement and embracing the saidi rod in such a way that the latterwhile sliding in the collar is constrained to follow the ro- Cil tary oscillating movements which'it receives intermittently from themeans for reciprocating the rod, substantially as described.

- 6. n pump as set forth in claim l, in which the rotary and oscillatory movementof the cylinder reciprocating rod is effected by'a pin and slot connection between the `rod operating the cylinder and `the motion transmitting device substantially as described. 7. In a` pump as set forth in claim l, means for effecting and controlling the rotary oscillatory movements of the cylinder reciprocating rod comprising a toothed pinion secured to a collar surrounding the rod and a reciprocating rack bar engaging therewith, said rack bar being moved to and fro by levers operated by a cam on a crank which effects' the raising and loweringmof the rod.

8. A pump as set forth in claim l, particularly adapted for use in bore holes, deep wells or the like in which the delivery is made into a jacket which surrounds the pump casing and is connected to the delivery piping,and in which the inlet port is formed by an opening in the jacket andjcasing, whereby suction is obtained from without into the pump casing `substantially as d escribed. j j

9. In a pump as set forth in claiming clause 4C the provision of an indicator for the purpose of indicating the exactfposition exterior wall of the piston and the interior `wallof the casing in which space the Wall of the open ended cylinder works in its reciprocating movements whereby the water in this space is also discharged in the operation of the pump in addition to that in the cylinder proper substantially asl described.

In testimony whereof I affix my signature in presence of two witnesses.

WILHELM GOERT BOONZAIER- j `Witnesses:

j ARTHUR JAMES CADMAN, HAROLD DOUGLAS ELKINGTON. 

